Flanging device for sheet-metal blanks.



P. KRUSE.

'HANGING DEVICE FOR SHEET MEYAL BLANKS.

y APPLICATION FILEDl DEC.3I 1914.

Patented Apr. 13.1915.

2 SHEETS-SHEET `1.

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errer, zinnen, or esooiLYN. new vomi, essroron ro n. W. Buss oomreirr oesnooimim, new geen FLNGENG EEVCE FOR SHEET-EET@ Speccation of LettersPatent.

ilpplcetion allee Eecembe: 3i, wie. Serial io. 879,812.

j?) "unioni it may concern Be it l-:noT-:n that i, nos'e, citi zen theYLinited States.y residing et Brooklyn. cosinty of Kings. and State ofliiew.

positie edge oi the blank whereupon the in- .erhool-:ed 'flanges :irocompressed or {irt- V tened ont form the desired lap joint. This'ij-shaped flange has hitherto been niece in it leest tivo operationsend f blenlfwhile with the presi die ooinplete operation is perontsingle position of the hlzinlr,

.Torn/red in so .that the necessary mechanism is simplified und itsoutput increased. Y

the iiocoinpanying drawing igure l ntion of o can lianging device i.inrention; 2 is a side thereof; plan vier: oi one oi lie suA pori-ingone of the iiange iforinersz, Fig. si e cross section on line li- 4.fifr n. Eig. e diagrammatic section through Lange-forming elements,show- 1n7 the ill nnilzmged lvlenlr in position; W

r il. i5 a similar seotion showing the blank flanged by the rst former;Fig. 7 o, similar seotion showing the free delige-shank bent inward bythe second former, and Fig. 8 ai view of s lienged blank lient intoshape and showing lop joint prior to compression.

s shown in Fig. 7, the oompletedlonge is of substantie-l -sliope,theslianlzs il?, l1 oonvergiiig tovs'ard each other rom the web l l. Thisweb extends at on angle to the plone of 13,t'ne latter being more par#tioulorly designed for the production oi -oans or "ooxes of oblong iorines illustrated in Fig. 8. :is the longitudinalsenin should estema?.along one of the sharply curved ends o the nox the inclined position orthe the following ment of shank 10 and web 12 oi the nished ilenge. Theperimeter 18 of groove l5 ex*- iends in substantial parallelism withperimlzitened Apr. EL3, idillio..

eter i6. Die le is adapted to perform a slight vertical movement therebyacting as o. elainp or pressure bar for firmly holding the blank i3 toa. fixed support 19. i ter the iilanlr has been properly placed uponsupport 19 in any Vsuitable manner, die i-l is Caused to descend inmanner hereinafter more fully described, thereby clamping the blank inposition. A first former 20 the operative head oi which corresponds inoutline to that ci groove l5, is now advanced in parallelism with thegroove sides 16 and i8 until the blank portion 13L formerly project-ingbeyond the die (Fig. 5) is forced into groove l5 (llig. (i). Former 20is next retraoted whereupon a second former 2l movable et an :ingle roformer l0 is" adronced to engageV the protruding end voi shank ll undthereby turns it inwardly and toward shank l0 until it has assumed thelinel position illustrated in Fig. '.7. This inward bending of shank 11is facilitated owing to the prior formation of the crease 22 by meansoi' former 20..

The properly timed movements .o the above mentioned parts 14, and 2 arebrought about as followsz-ln the machinev rame A, there is journaled o.shaft 23 that receives continuous 4rotary motion in any convenientmanner. Upon shaft 23 is irmly mounted o. pair of eccentrics Q-i, 25adapted to respectively actuate former-s 2G, Q1 and n com' 26 adapted tooperate die 14. The letter is carried by the downwardly extending arm ZTof o two-erin lever 38, fulcruined at The rear arm of this lever isengaged by aork 3l which is oonneotedtlnough an adjustable rod 32 withanother forli 33 straddling shaft'23, fork 33 carrying seam roller 34that engages cam `26. lt .will oe seen more particularly from /lOllocated above and back of the die-groove 15 so that after the completionof the substantially U-shaped blank-tlfuifge. the diev 14 is not onlyraised ofi' `blank l?. b nt is also swung;r forward, e. laterally away'from said llange. In this way -theblank is not only released ofvertical pressure but is also relieved of any lateral strain to n'hiehit may have. been subjected n'lhile p'arl; thereof. was draivn intogroove lby former 2f) so that the Subsequentremoval of 'the llanfredblank iS facilitated: i Q

In a suitable iin-lined ;uid'le. way l5 of frame A is reeiprewablyniountqd a carrier 3G to which the former 2l) iff-f attached bv screws37. Within a suimble'reeess a earrier 36, there is mounted a slidefStoreed outwardly by a pair of springs llitthat are seated within opposedsockets l0. 4l'. ot' carrier 36 and slide 3S reslwctivel'v. The outwardmovement ot' the latter is limited by a nut l?. of a bolt 4?) thatextends loosel)Y through slide Il. and is tapped into carrier 86 thebolt being fixed in position by a pin 44. Slide a' is provide-d with apair ot elongated openings-t5 aee amnodatingthe knob-:-46 of levers fl?earried b v a eonnnon -hnb 48 that turns loosel)y on a shaft 49.'

Hub 48 is t'in'thern'iore provided witha forked arm 50 to which. isadjustably pivoted at 51 one end oll a lengthwise regzulatableconnecting rod 52. the other end of rxhieh is attached to the. strap 53ol eeeentrie il. n

As thus far described it will be seen that during' each rotation olshaft- Q carrier Ill is onee reeiprocatedwhereby the former J0 is firstadvanced into engagement with reeess 15 to forni a flange as shown inFie. l' and is then retracted. liv the interposition of springs 39between slide 3S and carrier 36 the necessary connection is provided foryieldingly forcing the former 20 into the die-recess.

Atteilormer 2() has been retraeted. former "2l is advanced to bend thefree flange-shank inwardly" (Fig. 7). the construction for actuatingformer 2l being as follows z-In a suitable horizontally extend- -ingguide way 54 of frame A 'is slidably mounted-a carrier to whieh theformer ,-2'1 is attached by screws 5G. (larrier a5 is. by springs 57yieldingly connected to a slide 5S while the. parts 5S are held togetherbj ya bolt Dat-arming a nut ad. the construction being' a substantialduplicate. ol' the 'carrier or former i205 Slide 58 is ai:- tuated bylevers (Sl engaging correspondingrr apertures 62 ot' the. slide'andformingr part ol a hun (SS that turns loof-'ely on a shaft (il.

formation ot' the U-slialred flange along one vlange-Jr'orming; meansfrm-n the blank, and flneans 'lor turning one of said shanks to- Illib(33 is furthermore provided with an ear edge of blank 13, a hook'. isformed the opposite edge olr the blank the 'means for performing thisoperation being not shown as they do not form part of the presentinvention. 70

.blank in position, means for forming on said blank a Substantially{JL-shaped flange having a pair ot opposed shanks andV for subsequentlyNLadraw-ing a` portion ot said Ward the other shank subsequently to thewithdrawal ot' said portion of the flangeforming means from the blankand` While said blank is still engaged b v the, elamping '135 means.

Il. :t flangia-gy deviee for sheet metal 'blanks eomi'irising means't'or elampinga blank in position. means for forming a suhr-:tantiallyU-shaped flange along one. edge.. Loo ot' said blank andgforsubsequently Withdrau'iire a portion of said flange-forming means l'ronithe blank. said flange comprising! a web. a hrs-t. shank connecting saidweb 'io the unbentblank-{mrtioin and a second 105 shank extending .insubstantial. i'iarallelisni with the first shank` and means for turningf-aid see-ond shank toward the first shank snhsefplently to thewithdrawal of said pfortion of the drinne-forming means from the 110blank and while the blank is Still 'engaged b v said clamping means. n v

-l. .l Hanging devineAi fori'sheetf' metal blanks comprisingnieansfor-clampingi a blank in position. means for forming aasnb-h 11.5slantiall;Y U-shaped'llange along one'edge. of said blank and Jforsubsequen't'fl)i7 Withdrawing a portiowot said thingie-forming means'from the blankfwsaid flange comprising-a web that extends at an angleto the plane offiz() the blank, a first shank connecting said njeb`` tothe unbent blank-portion` and a second .shank extending in substantial.parallelisnrv with the first shank, and means for turning .said second:shank vtoward the. first shanl f i subsequently to the withdrawalportion, of the flange-forming means-.fromfthe blank 'and'while saidblank is stillengiaged by saidelampingmeans.

5; Ail-Hanging' device for nant-metatags' reciprocal first formeradapted to force 'outer shank, a reciprocal second formeradapted toengage said outer shank, subsel quently to the Withdrawal of the firstformer therefrom, and means for With drawing the die from the support ina direcf tion extending upwardly from the support and laterally awayfrom the formed blanlb flange, said withdrawal taking place Subseformerafrom the blank.

i PETER KRUSE.

Witnesses FREDERICK L. COLWELL, Jr., ARTHUR E. Zmrrn.

vquently to the Withdrawal of both of said 20

